User's Manual

Chapter 7: Configuration
Configuring quality of service
Page 7-200
Hi Priority Downlink
CIR
This field indicates the minimum rate at which high priority traffic is sent
over the downlink (unless CIR is oversubscribed or RF link quality is
degraded).
 Committed Information Rate (CIR) on page 7-190
 Setting the Configuration Source on page 7-194
Priority Precedence
Allows operator to decide if 802.1p or DiffServ priority bits must be used
first when making priority decisions.
PPPoE Control
Message Priority
Operators may configure the SM to utilize the high priority channel for
PPPoE control messages. Configuring the SM in this fashion can benefit
the continuity of PPPoE connections when there are issues with PPPoE
sessions being dropped in the network. This prioritization may be
configured in the DiffServ tab in the Configuration menu of the SM.
Prioritize TCP ACK
To reduce the likelihood of TCP acknowledgement packets being
dropped, set this parameter to Enabled. This can improve throughput
that the end user perceives during transient periods of congestion on the
link that is carrying acknowledgements. This parameter, when enabled,
can be particularly useful when running bi-direction FTP sessions over
the link. If a link is primarily used for video surveillance, it is
recommended to configure this parameter to Disabled.
Quality of Service (QoS) page of BHM
The QoS page of BHM is explained in Table 167.
Table 167 QoS page attributes - BHM
Attribute
Meaning
PPPoE Control
Message Priority
Operators may configure the BHM to utilize the high priority channel for
PPPoE control messages. Configuring the BHM in this fashion can
benefit the continuity of PPPoE connections when there are issues with
PPPoE sessions being dropped in the network. This prioritization may be
configured in the DiffServ tab in the Configuration menu of the BHS.
Prioritize TCP ACK
To reduce the likelihood of TCP acknowledgement packets being
dropped, set this parameter to Enabled. This can improve throughput
that the end user perceives during transient periods of congestion on the
link that is carrying acknowledgements. This parameter, when enabled,
can be particularly useful when running bi-direction FTP sessions over
the link. If a link is primarily used for video surveillance, it is
recommended to configure this parameter to Disabled.